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Complete the following activity to solve the simultaneous equations `2x+y=19` and `2x-3y=-3` by Cramer's rule.
`D=|(2,1),(2,-3)|= square, D_(x)=|(19,1),(-3,-3)|= square , D_(y)=|(2,19),(2,-3)|= square ,`
`x = square , y = (11)/(2)`

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